Article
Nanoscience & Nanotechnology
Nagendra Kulal, Rajappan Vetrivel, N. S. Ganesh Krishna, Ganapati Shanbhag
Summary: The modification of CeO2 nanorods with divalent transition metal ions enhances oxygen vacancies and improves CO2 activation for glycerol carbonate synthesis. Zn-doped CeO2 nanorods exhibit higher surface reducibility, leading to increased efficiency in the conversion process.
ACS APPLIED NANO MATERIALS
(2021)
Article
Thermodynamics
Jingjun Liu, Dandan Pan, Qing Zhang, Yulei Guan, Bolun Yang
Summary: This study investigated the phase splitting and merging phenomena in the glycerol transesterification with diethyl carbonate. By measuring the liquid-liquid equilibrium data and using the NRTL model, the phase equilibrium trends of the systems were accurately captured and validated.
FLUID PHASE EQUILIBRIA
(2022)
Article
Energy & Fuels
Ricardo L. Souza Junior, Thiago M. Rossi, Chaline Detoni, Mariana M. V. M. Souza
Summary: In this study, Ca/Al-mixed oxides derived from hydrocalumite were evaluated as catalysts for the transesterification of glycerol with diethyl carbonate. The performance of the catalysts varied with the calcination temperature, and the HC calcined at 700 degrees C showed promising results.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Multidisciplinary
Wahyu S. Putro, Yusuke Munakata, Seiichiro Ijima, Shinji Shigeyasu, Satoshi Hamura, Seiji Matsumoto, Takayoshi Mishima, Keiichi Tomishige, Jun-Chul Choi, Norihisa Fukaya
Summary: The combination of CeO2 catalyst and ethanol effectively promotes the direct synthesis of diethyl carbonate from CO2 and an orthoester. Optimized conditions yield high productivity, with orthoesters bearing longer alkyl substituents leading to higher DEC yields in the presence of ethanol. Aromatic and halide moieties in orthoesters negatively impact DEC formation.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Marco Buchmann, Martin Lucas, Marcus Rose
Summary: The direct conversion of (bio)ethanol and CO2 to diethyl carbonate (DEC) is a promising route due to the low cost and renewable nature of the reactants. By using urea as a precipitation agent, the optimal catalytic activity of pure ceria for DEC formation is achieved through a balance of surface acidity and basicity with a high specific surface area. Temperature-programmed desorption experiments indicate that weak basic sites play a key role in the DEC formation process.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Araya Chotchuang, Pawitra Kunsuk, Amornpun Phanpitakkul, Sarun Chanklang, Metta Chareonpanich, Anusorn Seubsai
Summary: This study investigated the production of glycerol carbonate using modified sodium aluminate catalysts. The results showed that the catalyst modified with calcium oxide and glycerol as a template produced the most active catalyst. By optimizing the operational parameters, a high yield of glycerol carbonate was achieved.
Article
Chemistry, Multidisciplinary
Jiarui Gao, Jia-Wei Yang, Tenglin Ma, Jia Wang, Dan Xia, Bin Du, Yan Cui, Chengwu Yang
Summary: The direct synthesis of glycerol carbonate (GC) from CO2 and glycerol has not yet been industrialized due to the lack of efficient catalysts. In this study, CeO2 nanocrystals with different morphologies were synthesized as model catalysts to investigate the mechanism of this reaction. Experimental and computational results revealed that the density of basic sites on the CeO2 surface is linearly dependent on the GC formation rate, and the CeO2 (111) surface exhibits the lowest activation energy.
CHINESE CHEMICAL LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Mariana Alvarez Serafini, David Gonzalez-Miranda, Gabriela Tonetto, Felix Garcia-Ochoa, Miguel Ladero
Summary: The solventless transcarbonation of glycerol with other organic carbonates driven by alkaline catalysts allows the high yield production of glycerol carbonate, which serves as an advanced humectant and monomer for diverse polycarbonates. The main operational variables affecting the transcarbonation reaction of glycerol and ethylene carbonate catalyzed by zinc stearate were studied, including catalyst concentration, reagent molar ratio, and temperature. A kinetic model was fitted to the experimental data and extended to different temperatures, revealing a bimolecular and elemental reaction mechanism with interfacial behavior.
Article
Green & Sustainable Science & Technology
Shivali Arora, Vijayalakshmi Gosu, U. K. Arun Kumar, Verraboina Subbaramaiah
Summary: The present study investigated the catalytic activity of heterogeneous catalyst for transesterification of glycerol into glycerol carbonate. The study found that lithium impregnated on MCM-41 framework showed better catalytic activity, leading to an increase in the average pore diameter. The optimal conditions for glycerol carbonate yield were determined as 5% Li impregnation, calcination at 450°C, reaction temperature of 90°C for 3 hours, achieving a 93.14% yield.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Praveen Kumar, Romana Cerc Korosec, Urska Lavrencic Stangar
Summary: A series of Cu-Al hydrotalcite-like compounds were prepared and investigated as catalysts for the transcarbonation of glycerol with dimethyl carbonate. The Cu/Al molar ratio significantly influenced glycerol conversion and glycerol carbonate yield. Among the synthesized catalysts, the Copper-Aluminum (3Cu-Al@500) catalyst exhibited excellent catalytic activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Tao Chang, Mizuho Yabushita, Yoshinao Nakagawa, Norihisa Fukaya, Jun-Chul Choi, Takayoshi Mishima, Seiji Matsumoto, Satoshi Hamura, Keiichi Tomishige
Summary: 2,2-diethoxypropane (DEP) and H-FAU were found to function as an effective dehydrating system to accelerate the synthesis of diethyl carbonate (DEC). A detailed kinetic study and DRIFT spectroscopy revealed that an ethyl carbonate species is formed on the CeO2 surface, while DEP is adsorbed and activated on the H-FAU surface. Additionally, ethanol acts as another ethoxy source in the DEC synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Wahyu S. Putro, Akira Ikeda, Shinji Shigeyasu, Satoshi Hamura, Seiji Matsumoto, Vladimir Ya Lee, Jun-Chul Choi, Norihisa Fukaya
Summary: A new sustainable catalytic synthesis approach using TEOS and CO2 to produce DEC has been developed, which allows for the recycling of byproducts and optimization of the reaction by changing parameters like substituents.
Article
Biochemistry & Molecular Biology
Muhammad Tariq Saeed Chani
Summary: Nanocomposites of chitosan and cerium oxide-cadmium oxide nanoparticles were developed to fabricate impedimetric humidity sensors, showing high sensitivity and fast response and recovery times. These sensors are suitable for environmental monitoring and biomedical applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Energy & Fuels
Najaa Rozulan, Siti Atikah Halim, Nurul Razali, Su Shiung Lam
Summary: Concerns about global warming and energy demand have driven the interest in and action to produce biodiesel as a substitute for fossil fuels. However, the increase in biodiesel production results in the generation of glycerol waste. Utilizing and upgrading this waste can reduce waste volume and increase the market value of glycerol and the sustainability of biodiesel production. This review focuses on the carboxylation of glycerol waste to produce glycerol carbonate (GC) and discusses the impact of catalysts, dehydrating agents, solvents, and other reaction conditions on the conversion and selectivity of glycerol to GC. The use and applications of GC are also reviewed.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Engineering, Environmental
Shivali Arora, Vijayalakshmi Gosu, Verraboina Subbaramaiah, B. H. Hameed
Summary: In this study, coal fly ash was utilized as a catalytic support for lithium ions by impregnation, with the resulting catalyst's basic properties and catalytic activity towards glycerol conversion being experimentally determined. The maximum catalytic activity was achieved with 2 wt% lithium loaded CFA, calcined at 500 degrees C, leading to a maximum yield of glycerol carbonate. The proposed work has the potential to potentially boost the economy of the biodiesel industry.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Geography, Physical
Fang Fang, Linyun Zeng, Shengwen Li, Daoyuan Zheng, Jiahui Zhang, Yuanyuan Liu, Bo Wan
Summary: This study proposes a novel spatial context-aware method for land use classification that improves classification accuracy and identification of parcels without street view images by modeling the spatial relationships between street view images and land parcels.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2022)
Article
Materials Science, Ceramics
Jiahui Zhang, Chengwei Gao, Chengmiao He, Linling Tan, Shiliang Kang, Qing Jiao, Tiefeng Xu, Changgui Lin
Summary: Chalcogenide solid-state electrolytes (SSEs) with high ionic conductivity and suitable mechanical properties, especially the Li2S-P2S5 systems incorporated with a second glass network formers, have attracted increasing attention. However, the comprehensive effects of different glass formers on electrochemical, cycling, and air stability remain unclear.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Chengwei Gao, Jiahui Zhang, Chengmiao He, Shiliang Kang, Linling Tan, Qing Jiao, Tiefeng Xu, Shixun Dai, Changgui Lin
Summary: The interfacial stability of Li2S-SiS2-P2S5 solid-state electrolytes can be enhanced by incorporating LiI, which improves the ionic conductivity and suppresses lithium dendrite growth. This work provides valuable insights into interphase evolution for the design of solid-state electrolytes with long cycling stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
GuoJiao Xiang, YiJian Zhou, WenBo Peng, Yue Liu, JiaHui Zhang, JinMing Zhang, HaoXuan Huang, MengYan Mei, Hui Wang, Yang Zhao
Summary: This study prepared CuO films at different sputtering pressures using magnetron sputtering technology and investigated their optical properties, structural characteristics, electrical properties, and carrier transport characteristics. The results showed that relatively better CuO films could be obtained at 1.6 Pa, and the ambient temperature had a significant influence on the resistivity and carrier concentration of CuO films.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Physics, Applied
Shaoze Lu, Zhijun Meng, Jun Huang, Mingxu Yi, Jiahui Zhang, Kaipeng Wang, Zeyang Wang, Lei Chen
Summary: In this study, the scattering properties and equivalent transformation of triangular pyramid targets in quantum radar technology were investigated. The analytical expression of the triangular pyramid was determined by solving the Fourier transform, and its scattering cross-section was calculated. The results showed that the proposed method was accurate and efficient.
MODERN PHYSICS LETTERS B
(2022)
Article
Education, Scientific Disciplines
Xiaoyan Cai, Zhiying Li, Jiahui Zhang, Mingmei Peng, Shuai Yang, Xiaoying Tian, Qiaohong Yang, Fengxia Yan
Summary: This study applied the ARCS model-based motivational teaching strategies in a community nursing course. The results from both quantitative and qualitative assessments showed that students in the experimental group demonstrated significantly greater critical thinking and higher test scores compared to the control group. The self-learning ability and learning motivation of the students exposed to the ARCS model were also strengthened, and students reported high levels of satisfaction with the motivational teaching strategies.
NURSE EDUCATION TODAY
(2022)
Article
Plant Sciences
Xiao-Hui Li, Jia-Hui Zhang, Yu Zhang, Ying-Tong Di, Yu-Cheng Gu, Mingming Cao, Xiao-Jiang Hao
Summary: Four new Myrioneuron alkaloids, mysumamines A-D (1-4), and six known compounds (5-10) were isolated from the aerial parts of Mycetia effusa (syn. Myrioneuron effusum, Rubiaceae). Compounds 1-3 are undescribed tricyclic Myrioneuron alkaloids, while compound 4 is a new hexacyclic Myrioneuron alkaloid. The structures of these new compounds were determined by MS, 1D and 2D NMR spectral analysis.
PHYTOCHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Baihui He, Change Dong, Xiaoqing Wang, Yan Cao, Yuanze Gao, Mingming Yang, Jiahui Zhang, Changling Jing, Dahua Shi, Zhonglu You
Summary: Four new nickel(II), cadmium(II), copper(II) and iron(III) complexes were synthesized and characterized. The structures of the complexes were confirmed by single crystal X-ray diffraction. The copper complex exhibited good activity in jack bean urease inhibitory assay.
Article
Plant Sciences
Pu Yan, Jiahui Zhang, Nianpeng He, Weikang Zhang, CongCong Liu, Marcos Fernandez-Martinez
Summary: Global changes have affected vegetation photosynthesis, particularly in terms of the gross primary productivity (GPP) which influences the global carbon cycle. This study found that soil nutrients and functional diversity are the main determinants of the magnitude of GPP variability, and climate effects are predominantly mediated by multifaceted diversity.
JOURNAL OF ECOLOGY
(2023)
Article
Mathematics, Applied
Jiahui Zhang, Yinhua Xia, Yan Xu
Summary: In this paper, a new well-balanced discontinuous Galerkin (DG) method is proposed to preserve moving-water equilibria in the shallow water equations. Instead of approximating the conservative variables, the scheme approximates the equilibrium variables in the DG piecewise polynomial space. The numerical fluxes are modified based on the generalized hydrostatic reconstruction to achieve moving water equilibrium preservation.
JOURNAL OF SCIENTIFIC COMPUTING
(2023)
Article
Geochemistry & Geophysics
Jiahui Zhang, Dan Wang, Jinghui Guo, Yunwei Ren, Hui Tian, Huichu Wang, Xin Tong, Yipeng Zhang, Jianrong Shi, Qingsong Chang, Zhenqun Xiang
Summary: The study investigates the petrogenesis, geochronology, and isotopic signatures of Neoarchean granitoids from the Huai'an Complex in the North China Craton. The results suggest that these rocks formed through crust-mantle interaction and continental crust evolution. The diverse geochemistry of these granitoids is controlled by their source compositions, magmatic mixture, and accumulation processes. The findings contribute to our understanding of the geodynamic processes and origin of continental crust during the Late Neoarchean-Early Paleoproterozoic.
Article
Environmental Sciences
Chaolian Jiao, Jiahui Zhang, Xiaochun Wang, Nianpeng He
Summary: This study comprehensively evaluated plant magnesium content and density in 680 ecosystems on the Qinghai-Tibetan Plateau for the first time. The results showed that plant magnesium content decreased from northwest to southeast, while magnesium density was higher in the east of the plateau, reflecting plant adaptive strategies. These findings provide insights into biogeochemical cycling and can facilitate the optimization of remote sensing parameters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Yongjun Zhang, Weiguo Zhang, Huangshuai Xia, Bin Gong, Fei Liu, Jiahui Zhang, Kai Liu
Summary: This study describes a water inrush and ground collapse accident that occurred in the Qingdao Metro Line 4 and analyzes the causes of the disaster. A risk assessment method is proposed and validated in order to reduce the occurrence of water inrush in a composite formation tunnel. The results indicate that the failure of the tunnel vault surrounding rock, weakened by the tunnel excavation and water pressure, triggered the water inrush and caused a large volume of surface collapse.
APPLIED SCIENCES-BASEL
(2023)
Article
Food Science & Technology
Meixiang Yao, Xin Qi, Jiahui Zhang, Chengyuan Wang, Jianhua Xie
Summary: In this study, whey protein isolate (WPI)-Mesona chinensis polysaccharide (MCP) conjugate was prepared and used as a stabilizer for O/W emulsion. The results showed the possible interactions between MCP and WPI, and the involvement of hydrogen bonding in the covalent binding process. The emulsion formed by WPI-MCP had a larger size compared to the emulsion formed by WPI. The conjugation of MCP with WPI improved the apparent viscosity and gel structure of the emulsions, but the protection effect on beta-carotene still needs improvement.
Article
Clinical Neurology
Kebing Zhou, Yu Zhou, Yuena Zeng, Jiahui Zhang, Xiaoyan Cai, Jieying Qin, Zhiying Li, Fengxia Yan
Summary: This study aimed to conduct a bibliometric analysis of scientific literature on the use of transcranial direct current stimulation in stroke treatment. The results showed that the USA had the highest number of publications, with Harvard Medical School and Fregni F being the top institutions and authors respectively. The research topics can be categorized into three sections: treatment mechanisms, comparison with transcranial magnetic stimulation, and clinical application in post-stroke dysfunction. Walking, strength, and virtual reality therapy were identified as future research hotspots for transcranial direct current stimulation.
NEUROPSYCHIATRIC DISEASE AND TREATMENT
(2023)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
